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nata0808 [166]
3 years ago
11

Are the graphs of the lines x - 2y = 4 and y = 2x - 2 parallel, perpendicular, or neither? Explain your answer.

Mathematics
1 answer:
LenKa [72]3 years ago
8 0

Answer:

neither ; their slopes aren't the same and aren't reciprocals.

Step-by-step explanation:

neither ; their slopes aren't the same and aren't reciprocals.

I took the test, I got the question right.

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Select the all numbers below which are rational numbers.
AfilCa [17]

-76

10.030030030030030...

0.625

18.310

square root 0.25

5/9

8 0
3 years ago
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Dr. Hemandez just started an experiment. He will collect data for 8 days. How many hours is this?
vagabundo [1.1K]

Answer:

192 hours.

Step-by-step explanation:

24 hours in a day

24 x 8 = 192 hours.

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Which equation could be solved using this application of the quadratic formula?
Alex_Xolod [135]

Answer:

C. x^2 + 2x - 1 = 3

Step-by-step explanation:

The standard form of a quadratic equation is

ax^2 + bx + c = 0

We need to use the quadratic formula and the given expression to find the values of a, b, and c.

The quadratic formula is

x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}

Where the formula has -b, the problem has -2, so b = 2.

Now we have

ax^2 + 2x + c = 0

In the denominator, where the formula has 2a, the problem has 2(1), so a = 1.

Now we have

x^2 + 2x + c = 0

Inside the root, the quadratic formula has -4ac. the problem shows -4(1)(-4). Since we already know that a = 1, then c = -4.

Now we have

x^2 + 2x - 4 = 0

Let's look at choice A.

x^2 + 1 = 2x - 3

Subtract 2x from both sides. Add 3 to both sides.

x^2 - 2x + 4 = 0   <em>This is not it!</em>

Let's look at choice B.

x^2 - 2x - 1 = 3

Subtract 3 from both sides.

x^2 - 2x - 4 = 0     <em>This is not it!</em>

Let's look at choice C.

x^2 + 2x - 1 = 3

Subtract 3 from both sides.

x^2 + 2x - 4 = 0     <em>This is it!</em>

Answer: C. x^2 + 2x - 1 = 3

8 0
3 years ago
There are 11 girls and 14 boys in Mrs. Smith's fourth grade class, as shown in the
WINSTONCH [101]
79% the second choice
8 0
3 years ago
Help help help help please
vodomira [7]

Answer:

x<-3

Step-by-step explanation:

-7x+6/3 >9

-7x+6 >27

-7x>27-6

-7x>21

-x>3

x<-3

7 0
2 years ago
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